4.1 The Subject Of The Order Includes The Successive, As Needed, Delivery Of Brand New Vacuum Valves Intended For The Expansion Of The Vacuum Sewage Network In The Wiązownica Commune, According To Quantitative Scope Specified In The Annex To The Swz. 4.2 Technical Parameters Of The Vacuum Valve: Valve Diameter 90 Mm. Equipped With A Counter Built Into The Valve Body Allowing Automatic Counting Of The Number Of Operating Cycles. Should Have A Button For Manual Activation For Adjustment And Service Purposes Built Into The Valve Head. Meet The Requirements Of The Pn-En 16932:2018 Standard. Have Durability And Documented Operation In Number Of At Least 250,000 Operating Cycles Without The Need To Replace Valve Components. Made Of Materials Adapted To Work In Sewage Atmosphere Conditions And Their Design Should Limit The Possibility Of Blocking The Valve Seat. Have A Structure Ensuring That The Gap Of The Unclosed Valve Head Not Registered By The Monitoring Sensor Is A Maximum Of 6 Mm. Should Have A Capacity Ensuring A Maximum Hourly Flow Of 0.5L/S When Sucking A 40L Portion Of Sewage In One Cycle. Be Able To Easily Clean The Sensor Membrane For Regeneration And Cleaning Without The Need To Dismantle The Controller Housing. The Non-Return Valve Should Be Dismountable For Periodic Cleaning And Regeneration. The Minimum Opening Negative Pressure Should Be 20Kpa. The Valve Must Provide Direct Access To The Valve Seat For Servicing Purposes Without The Need To Disconnect From The Network The Lower Part Of The Body And Disassembly Of The Closing And Opening System (Membrane, Spring).
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